Cushioning means for the fallers of gill boxes and intersecting frames



c. GGAuFF 1,763,926

CUSHIONING MEANS FOR THE FALLERS;OF GILL BOXES AND INTERSECTING FRAMESJune 17, 1930.

Filed Seph. 22, 1928 v A v r.

Patented June 17, 1930 UNrrn STATES PATENT OFFICE CHARLES eE'eAUrr, orMULHoUsE, ALSACE, FRANCE CUSHIONING MEANS FOR THE FALLER-S F GILL BOXESAND INTERSECTING- FRAMES Application filed September 22, 1928, SerialNo. 307,728, and in France October 1, 1927.

The present invention relates to gill frames or boxes with intersecting.fallers.

The invention consists in a cushioning de-' vice to deaden the shockproduced at the impact of the fallers upon their rigidslides,

either at their sudden lift or their sudden fall, that is to say eitherat the moment they enter in the sliver or at the moment when arrivingnear the drawing rollers, they are suddenly dropped. This impact is asud- .mation of the parts coming in contact,

which rapidly causes wear and deterioration. It has been proposed, tolessen this important wear, to provide an elastic support for theguiding slides of the gill bars. But this proposition had no successbecause such disposition could not change the rigid slide in an elasticelement and that on theother hand the permanent deformation takes placepractically before the inert cushion ing support can react; as aconsequence the machine comes in vibration and this lncreases the wearstill more, so that the drawback is greater than before.

The present invention has for its object to eliminate said drawback bytransforming the shock of the faller upon the slide, in an elasticshock, owing to the special arrange ment of the slide.

The accompanying drawing illustrates diagrammatically by way of example,cer tain forms of embodiment of the invention.

Fig. 1 front elevation partly in section of a gill box with intersectingfallers.

Fig. 2 side elevation partly in section of same, the arrows showing thedirection of movement of the fallers M.

Fig. 3 side and end elevation of a guide piece for the gill bars.

Fig. 4 side elevation of a further application of the invention in agill box.

The slide 17. n receiving the shock of the fallers is not simply formed,as up to now, with a massive prismatic element fixed to the machineframe, but it is provided at the point Z, receiving the shock of thefallers 71 with a light and flexible blade hi for instance a steel bladeof about 1 to 2 millimeters thick, fixed at its end Z to the slide a nitself. Instead of a blade, any other elastic material can be used andapplied at the spot Z.

In this way the shockof the fallersv will be absorbed and will no moreproduce a bruising of the contacting surfaces, owing to the bending ofthe blade and as the'mass of the flexible blade end is very small, itsinertia will not be sufficient to produce the bruising of thecontacting'surfaces, which would be unavoidable if said mass was moreconsiderable and which is generally the case in the systems actually inuse. 7

The same cushioning device can be applied advantageously at the spot pof the" slide Z 2 1'- It is also possible to use, but in a lessefficient manner, the old prismatic massive slider, made in one piece,and in which a saw cut m of sufficientdepth has been provided tocommunicate a relative flexibility at the point of impact; this flexiblepart must however be of reduced mass, this and its flexibility being twoconditions to be" observed.

I Fig. 4cillustrates a somewhat different ap-,

'plication of the invention. The shock" of Up to now the vertical guideelement 25 1- ended simply in a rigid hook, to suddenly stop the fallerswithout interposition of any elastic part.

I claim;

1. In gill boxes with intersecting fallers and upper and lower guiderails for both sets of fallers, longitudinal saw cuts in both lowerguide rails of suflicient depth to form a flexible part'of very smallmass for taking the impact of the fallers at the end of their fall, thearrangement being such that the space occupied by'the guide rails is notincreased at all.

2'. In gill boxes with intersecting fallers, upper and lower horizontaland lateral vertical guide rails for. both sets of fallers,

longitudinal saw cuts in both lower guide -rails of suflicientdepth toform a flexible part of very small mass for taking the impact of thefallers at the end of their fall,

the arrangement being suchthat the space occupied by the guide rails isnot increased 7 at all, and flexible blades of small mass see the curedto two vertical guide rails and adapted to take the thrust of thefallers at the end. I

of their ascending stroke.

3. In gill boxes with intersecting 'fallers,

two sets of fallers, upper and lower guide rails for both sets offallers, and flexible blades of very small mass secured to both lowerguide rails at the ends of same upon which the fa-llers hit at the endof their fall, so that the impact of the fallers is taken by saidblades, the connection ot'the blade to guide rail being such that thespace occupied by the blade and guide rail is not substantially greaterthan that which the guide rail would occupy alone when it receives' theimpact of the fallers itself.

4. In gill boxes with intersecting fallers,. two sets of fallers, upperand lower horizontal and lateral vertical guide rails for both sets offallers, flexible blades of very small mass secured to both lower guiderails at the ends of same upon which the fallers I hit at the end oftheir fall, so that the impact of the fallers at the end of their de:

, scendingstroke is taken by said blades, the

connection of the blade to the guide rail,

being such that the space occupied by the blade and guide rail is notsubstantially greater than that whichthe guide rail would occupy alonewhen it receives the impact of the fallers itself, and flexible bladesof small mass secured to two vertical guide rails and adapted to takethe thrust of the fallers at I r the end of their ascending stroke.

In testimony whereof I signed hereunto my name. r i

CHARLES onGAUFF,

